from datetime import datetime
import hashlib
from werkzeug.security import generate_password_hash, check_password_hash
from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
from flask import current_app, request
from flask_login import UserMixin, AnonymousUserMixin
from . import db, login_manager


class Permission:
    FOLLOW = 0x01
    COMMENT = 0x02
    WRITE_ARTICLES = 0x04
    MODERATE_COMMENTS = 0x08
    ADMINISTER = 0x80


class Role(db.Model):
    __tablename__ = 'roles'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), unique=True)
    default = db.Column(db.Boolean, default=False, index=True)
    permissions = db.Column(db.Integer)
    users = db.relationship('User', backref='role', lazy='dynamic')

    @staticmethod
    def insert_roles():
        roles = {
            'User': (Permission.FOLLOW |
                     Permission.COMMENT |
                     Permission.WRITE_ARTICLES, True),
            'Moderator': (Permission.FOLLOW |
                          Permission.COMMENT |
                          Permission.WRITE_ARTICLES |
                          Permission.MODERATE_COMMENTS, False),
            'Administrator': (0xff, False)
        }
        for r in roles:
            role = Role.query.filter_by(name=r).first()
            if role is None:
                role = Role(name=r)
            role.permissions = roles[r][0]
            role.default = roles[r][1]
            db.session.add(role)
        db.session.commit()

    def __repr__(self):
        return '<Role %r>' % self.name


class User(UserMixin, db.Model):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(64), unique=True, index=True)
    username = db.Column(db.String(64), unique=True, index=True)
    role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
    password_hash = db.Column(db.String(128))
    confirmed = db.Column(db.Boolean, default=False)
    name = db.Column(db.String(64))
    location = db.Column(db.String(64))
    about_me = db.Column(db.Text())
    member_since = db.Column(db.DateTime(), default=datetime.utcnow)
    last_seen = db.Column(db.DateTime(), default=datetime.utcnow)
    avatar_hash = db.Column(db.String(32))

    def __init__(self, **kwargs):
        super(User, self).__init__(**kwargs)
        if self.role is None:
            if self.email == current_app.config['FLASKY_ADMIN']:
                self.role = Role.query.filter_by(permissions=0xff).first()
            if self.role is None:
                self.role = Role.query.filter_by(default=True).first()
        if self.email is not None and self.avatar_hash is None:
            self.avatar_hash = hashlib.md5(
                self.email.encode('utf-8')).hexdigest()

    @property
    def password(self):
        raise AttributeError('password is not a readable attribute')

    @password.setter
    def password(self, password):
        self.password_hash = generate_password_hash(password)

    def verify_password(self, password):
        return check_password_hash(self.password_hash, password)

    def generate_confirmation_token(self, expiration=3600):
        s = Serializer(current_app.config['SECRET_KEY'], expiration)
        return s.dumps({'confirm': self.id})

    def confirm(self, token):
        s = Serializer(current_app.config['SECRET_KEY'])
        try:
            data = s.loads(token)
        except:
            return False
        if data.get('confirm') != self.id:
            return False
        self.confirmed = True
        db.session.add(self)
        return True

    def generate_reset_token(self, expiration=3600):
        s = Serializer(current_app.config['SECRET_KEY'], expiration)
        return s.dumps({'reset': self.id})

    def reset_password(self, token, new_password):
        s = Serializer(current_app.config['SECRET_KEY'])
        try:
            data = s.loads(token)
        except:
            return False
        if data.get('reset') != self.id:
            return False
        self.password = new_password
        db.session.add(self)
        return True

    def generate_email_change_token(self, new_email, expiration=3600):
        s = Serializer(current_app.config['SECRET_KEY'], expiration)
        return s.dumps({'change_email': self.id, 'new_email': new_email})

    def change_email(self, token):
        s = Serializer(current_app.config['SECRET_KEY'])
        try:
            data = s.loads(token)
        except:
            return False
        if data.get('change_email') != self.id:
            return False
        new_email = data.get('new_email')
        if new_email is None:
            return False
        if self.query.filter_by(email=new_email).first() is not None:
            return False
        self.email = new_email
        self.avatar_hash = hashlib.md5(
            self.email.encode('utf-8')).hexdigest()
        db.session.add(self)
        return True

    def can(self, permissions):
        return self.role is not None and \
            (self.role.permissions & permissions) == permissions

    def is_administrator(self):
        return self.can(Permission.ADMINISTER)

    def ping(self):
        self.last_seen = datetime.utcnow()
        db.session.add(self)

    def gravatar(self, size=100, default='identicon', rating='g'):
        if request.is_secure:
            url = 'https://secure.gravatar.com/avatar'
        else:
            url = 'http://www.gravatar.com/avatar'
        hash = self.avatar_hash or hashlib.md5(
            self.email.encode('utf-8')).hexdigest()
        return '{url}/{hash}?s={size}&d={default}&r={rating}'.format(
            url=url, hash=hash, size=size, default=default, rating=rating)

    def __repr__(self):
        return '<User %r>' % self.username


class AnonymousUser(AnonymousUserMixin):
    def can(self, permissions):
        return False

    def is_administrator(self):
        return False


login_manager.anonymous_user = AnonymousUser

'''
'''


class Balance(db.Model):
    __tablename__ = 'balance'
    id = db.Column(db.Integer, primary_key=True)
    logtime = db.Column(db.DateTime())
    platform = db.Column(db.String(64))
    ETH = db.Column(db.String(64))
    BTC = db.Column(db.String(64))
    EOS = db.Column(db.String(64))
    XRP = db.Column(db.String(64))
    BCH = db.Column(db.String(64))
    ZEC = db.Column(db.String(64))
    NEO = db.Column(db.String(64))
    VEN = db.Column(db.String(64))
    BNB = db.Column(db.String(64))
    USDT = db.Column(db.String(64))
    DASH = db.Column(db.String(64))
    USD = db.Column(db.String(64))
    CNY = db.Column(db.String(64))
    Total_USD = db.Column(db.String(64))
    Total_BTC = db.Column(db.String(64))
    Value_USD = db.Column(db.String(64))
    Value_BTC = db.Column(db.String(64))

    def parse_data_to_bootstrap_table(self):
        state = dict()
        # state["ID"] = self.id
        state["logtime"] = self.logtime
        state["Platform"] = self.platform
        state["Total_USD"] = self.Total_USD
        state["Total_BTC"] = self.Total_BTC
        state["Value_USD"] = self.Value_USD
        state["Value_BTC"] = self.Value_BTC
        state["ETH"] = self.ETH
        state["BTC"] = self.BTC
        state["EOS"] = self.EOS
        state["XRP"] = self.XRP
        state["BCH"] = self.BCH
        state["DASH"] = self.DASH
        state["ZEC"] = self.ZEC
        state["NEO"] = self.NEO
        state["VEN"] = self.VEN
        state["BNB"] = self.BNB
        state["USD"] = self.USD
        state["CNY"] = self.CNY
        state["USDT"] = self.USDT
        return state


class BalanceEstimate(db.Model):
    __tablename__ = 'balance_estimate'
    id = db.Column(db.Integer, primary_key=True)
    logtime = db.Column(db.DateTime())
    platform = db.Column(db.String(64))
    ETH = db.Column(db.String(64))
    BTC = db.Column(db.String(64))
    EOS = db.Column(db.String(64))
    XRP = db.Column(db.String(64))
    BCH = db.Column(db.String(64))
    DASH = db.Column(db.String(64))
    ZEC = db.Column(db.String(64))
    NEO = db.Column(db.String(64))
    VEN = db.Column(db.String(64))
    BNB = db.Column(db.String(64))
    USDT = db.Column(db.String(64))
    USD = db.Column(db.String(64))
    CNY = db.Column(db.String(64))
    Total_USD = db.Column(db.String(64))
    Total_BTC = db.Column(db.String(64))
    Value_USD = db.Column(db.String(64))
    Value_BTC = db.Column(db.String(64))


class orderResponse(db.Model):
    __tablename__ = 'order_response'
    id = db.Column(db.Integer, primary_key=True)
    logtime = db.Column(db.DateTime())
    response = db.Column(db.Text())


class Trade(db.Model):
    __tablename__ = 'trade'
    id = db.Column(db.Integer, primary_key=True)
    logtime = db.Column(db.DateTime())
    platform = db.Column(db.Text())
    commodity_cur = db.Column(db.Text())
    base_cur = db.Column(db.Text())
    type = db.Column(db.Text())
    order = db.Column(db.Text())
    quantity = db.Column(db.Text())
    price = db.Column(db.Text())


class marketData(db.Model):
    __tablename__ = 'market_data'
    id = db.Column(db.Integer, primary_key=True)
    logtime = db.Column(db.DateTime())
    platform = db.Column(db.Text())
    price_bid = db.Column(db.Text())
    price_ask = db.Column(db.Text())
    volume_bid = db.Column(db.Text())
    volume_ask = db.Column(db.Text())


@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))
